| 1 | <?php |
| 2 | /** smtp.php |
| 3 | ** |
| 4 | ** This contains all the functions needed to send messages through |
| 5 | ** an smtp server or sendmail. |
| 6 | **/ |
| 7 | |
| 8 | $smtp_php = true; |
| 9 | |
| 10 | // Returns true only if this message is multipart |
| 11 | function isMultipart () { |
| 12 | global $attachments; |
| 13 | |
| 14 | if (count($attachments)>0) |
| 15 | return true; |
| 16 | else |
| 17 | return false; |
| 18 | } |
| 19 | |
| 20 | // Attach the files that are due to be attached |
| 21 | function attachFiles ($fp) { |
| 22 | global $attachments, $attachment_dir; |
| 23 | |
| 24 | $length = 0; |
| 25 | |
| 26 | if (isMultipart()) { |
| 27 | reset($attachments); |
| 28 | while (list($localname, $remotename) = each($attachments)) { |
| 29 | // This is to make sure noone is giving a filename in another |
| 30 | // directory |
| 31 | $localname = ereg_replace ("\\/", "", $localname); |
| 32 | |
| 33 | $fileinfo = fopen ($attachment_dir.$localname.".info", "r"); |
| 34 | $filetype = fgets ($fileinfo, 8192); |
| 35 | fclose ($fileinfo); |
| 36 | $filetype = trim ($filetype); |
| 37 | if ($filetype=="") |
| 38 | $filetype = "application/octet-stream"; |
| 39 | |
| 40 | $header = "--".mimeBoundary()."\r\n"; |
| 41 | $header .= "Content-Type: $filetype\r\n"; |
| 42 | $header .= "Content-Disposition: attachment; filename=\"$remotename\"\r\n"; |
| 43 | $header .= "Content-Transfer-Encoding: base64\r\n\r\n"; |
| 44 | fputs ($fp, $header); |
| 45 | $length += strlen($header); |
| 46 | |
| 47 | $file = fopen ($attachment_dir.$localname, "r"); |
| 48 | while ($tmp = fread($file, 570)) { |
| 49 | $encoded = chunk_split(base64_encode($tmp)); |
| 50 | $length += strlen($encoded); |
| 51 | fputs ($fp, $encoded); |
| 52 | } |
| 53 | fclose ($file); |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | return $length; |
| 58 | } |
| 59 | |
| 60 | // Delete files that are uploaded for attaching |
| 61 | function deleteAttachments() { |
| 62 | global $attachments, $attachment_dir; |
| 63 | |
| 64 | if (isMultipart()) { |
| 65 | reset($attachments); |
| 66 | while (list($localname, $remotename) = each($attachments)) { |
| 67 | if (!ereg ("\\/", $localname)) { |
| 68 | unlink ($attachment_dir.$localname); |
| 69 | unlink ($attachment_dir.$localname.".info"); |
| 70 | } |
| 71 | } |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | // Return a nice MIME-boundary |
| 76 | function mimeBoundary () { |
| 77 | global $version, $REMOTE_ADDR, $SERVER_NAME, $REMOTE_PORT; |
| 78 | |
| 79 | static $mimeBoundaryString; |
| 80 | |
| 81 | if ($mimeBoundaryString == "") { |
| 82 | $temp = "SquirrelMail".$version.$REMOTE_ADDR.$SERVER_NAME. |
| 83 | $REMOTE_PORT; |
| 84 | $mimeBoundaryString = "=-_+".substr(md5($temp),1,20); |
| 85 | } |
| 86 | |
| 87 | return $mimeBoundaryString; |
| 88 | } |
| 89 | |
| 90 | /* Time offset for correct timezone */ |
| 91 | function timezone () { |
| 92 | $diff_second = date("Z"); |
| 93 | if ($diff_second > 0) |
| 94 | $sign = "+"; |
| 95 | else |
| 96 | $sign = "-"; |
| 97 | |
| 98 | $diff_second = abs($diff_second); |
| 99 | |
| 100 | $diff_hour = floor ($diff_second / 3600); |
| 101 | $diff_minute = floor (($diff_second-3600*$diff_hour) / 60); |
| 102 | |
| 103 | $zonename = "(".strftime("%Z").")"; |
| 104 | $result = sprintf ("%s%02d%02d %s", $sign, $diff_hour, $diff_minute, $zonename); |
| 105 | return ($result); |
| 106 | } |
| 107 | |
| 108 | /* Print all the needed RFC822 headers */ |
| 109 | function write822Header ($fp, $t, $c, $b, $subject) { |
| 110 | global $REMOTE_ADDR, $SERVER_NAME, $REMOTE_PORT; |
| 111 | global $data_dir, $username, $domain, $version, $useSendmail; |
| 112 | global $default_charset; |
| 113 | |
| 114 | // Storing the header to make sure the header is the same |
| 115 | // everytime the header is printed. |
| 116 | static $header, $headerlength; |
| 117 | |
| 118 | if ($header == "") { |
| 119 | $to = parseAddrs($t); |
| 120 | $cc = parseAddrs($c); |
| 121 | $bcc = parseAddrs($b); |
| 122 | $reply_to = getPref($data_dir, $username, "reply_to"); |
| 123 | $from = getPref($data_dir, $username, "full_name"); |
| 124 | $from_addr = getPref($data_dir, $username, "email_address"); |
| 125 | |
| 126 | if ($from_addr == "") |
| 127 | $from_addr = "$username@$domain"; |
| 128 | |
| 129 | $to_list = getLineOfAddrs($to); |
| 130 | $cc_list = getLineOfAddrs($cc); |
| 131 | $bcc_list = getLineOfAddrs($bcc); |
| 132 | |
| 133 | if ($from == "") |
| 134 | $from = "<$from_addr>"; |
| 135 | else |
| 136 | $from = $from . " <$from_addr>"; |
| 137 | |
| 138 | /* Encoding 8-bit characters */ |
| 139 | $subject = encodeHeader($subject); |
| 140 | $from = encodeHeader($from); |
| 141 | |
| 142 | /* This creates an RFC 822 date */ |
| 143 | $date = date("D, j M Y H:i:s ", mktime()) . timezone(); |
| 144 | |
| 145 | /* Create a message-id */ |
| 146 | $message_id = "<" . $REMOTE_PORT . "." . $REMOTE_ADDR . "."; |
| 147 | $message_id .= time() . "@" . $SERVER_NAME .">"; |
| 148 | |
| 149 | /* Make an RFC822 Received: line */ |
| 150 | $header = "Received: from $REMOTE_ADDR by $SERVER_NAME with HTTP; "; |
| 151 | $header .= "$date\r\n"; |
| 152 | |
| 153 | /* Insert the rest of the header fields */ |
| 154 | $header .= "Message-ID: $message_id\r\n"; |
| 155 | $header .= "Date: $date\r\n"; |
| 156 | $header .= "Subject: $subject\r\n"; |
| 157 | $header .= "From: $from\r\n"; |
| 158 | $header .= "To: $to_list \r\n"; // Who it's TO |
| 159 | |
| 160 | if ($cc_list) { |
| 161 | $header .= "Cc: $cc_list\r\n"; // Who the CCs are |
| 162 | } |
| 163 | |
| 164 | if ($reply_to != "") |
| 165 | $header .= "Reply-To: $reply_to\r\n"; |
| 166 | |
| 167 | if ($useSendmail) { |
| 168 | if ($bcc_list) { |
| 169 | // BCCs is removed from header by sendmail |
| 170 | $header .= "Bcc: $bcc_list\r\n"; |
| 171 | } |
| 172 | } |
| 173 | |
| 174 | $header .= "X-Mailer: SquirrelMail (version $version)\r\n"; // Identify SquirrelMail |
| 175 | |
| 176 | // Do the MIME-stuff |
| 177 | $header .= "MIME-Version: 1.0\r\n"; |
| 178 | |
| 179 | if (isMultipart()) { |
| 180 | $header .= "Content-Type: multipart/mixed; boundary=\""; |
| 181 | $header .= mimeBoundary(); |
| 182 | $header .= "\"\r\n"; |
| 183 | } else { |
| 184 | if ($default_charset != "") |
| 185 | $header .= "Content-Type: text/plain; charset=$default_charset\r\n"; |
| 186 | else |
| 187 | $header .= "Content-Type: text/plain;\r\n"; |
| 188 | $header .= "Content-Transfer-Encoding: 8bit\r\n"; |
| 189 | } |
| 190 | $header .= "\r\n"; // One blank line to separate header and body |
| 191 | |
| 192 | $headerlength = strlen($header); |
| 193 | } |
| 194 | |
| 195 | // Write the header |
| 196 | fputs ($fp, $header); |
| 197 | |
| 198 | return $headerlength; |
| 199 | } |
| 200 | |
| 201 | // Send the body |
| 202 | function writeBody ($fp, $passedBody) { |
| 203 | global $default_charset; |
| 204 | |
| 205 | $attachmentlength = 0; |
| 206 | |
| 207 | if (isMultipart()) { |
| 208 | $body = "--".mimeBoundary()."\r\n"; |
| 209 | |
| 210 | if ($default_charset != "") |
| 211 | $body .= "Content-Type: text/plain; charset=$default_charset\r\n"; |
| 212 | else |
| 213 | $body .= "Content-Type: text/plain\r\n"; |
| 214 | |
| 215 | $body .= "Content-Transfer-Encoding: 8bit\r\n\r\n"; |
| 216 | $body .= stripslashes($passedBody) . "\r\n"; |
| 217 | fputs ($fp, $body); |
| 218 | |
| 219 | $attachmentlength = attachFiles($fp); |
| 220 | |
| 221 | $postbody .= "\r\n--".mimeBoundary()."--\r\n\r\n"; |
| 222 | fputs ($fp, $postbody); |
| 223 | } else { |
| 224 | $body = stripslashes($passedBody) . "\r\n"; |
| 225 | fputs ($fp, $body); |
| 226 | $postbody = "\r\n"; |
| 227 | fputs ($fp, $postbody); |
| 228 | } |
| 229 | |
| 230 | return (strlen($body) + strlen($postbody) + $attachmentlength); |
| 231 | } |
| 232 | |
| 233 | // Send mail using the sendmail command |
| 234 | function sendSendmail($t, $c, $b, $subject, $body) { |
| 235 | global $sendmail_path, $username, $domain; |
| 236 | |
| 237 | // open pipe to sendmail |
| 238 | $fp = popen (escapeshellcmd("$sendmail_path -t -f$username@$domain"), "w"); |
| 239 | |
| 240 | $headerlength = write822Header ($fp, $t, $c, $b, $subject); |
| 241 | $bodylength = writeBody($fp, $body); |
| 242 | |
| 243 | pclose($fp); |
| 244 | |
| 245 | return ($headerlength + $bodylenght); |
| 246 | } |
| 247 | |
| 248 | function smtpReadData($smtpConnection) { |
| 249 | $read = fgets($smtpConnection, 1024); |
| 250 | $counter = 0; |
| 251 | while ($read) { |
| 252 | echo $read . "<BR>"; |
| 253 | $data[$counter] = $read; |
| 254 | $read = fgets($smtpConnection, 1024); |
| 255 | $counter++; |
| 256 | } |
| 257 | } |
| 258 | |
| 259 | function sendSMTP($t, $c, $b, $subject, $body) { |
| 260 | global $username, $domain, $version, $smtpServerAddress, $smtpPort, |
| 261 | $data_dir, $color; |
| 262 | |
| 263 | $to = parseAddrs($t); |
| 264 | $cc = parseAddrs($c); |
| 265 | $bcc = parseAddrs($b); |
| 266 | $from_addr = getPref($data_dir, $username, "email_address"); |
| 267 | |
| 268 | if ($from_addr == "") |
| 269 | $from_addr = "$username@$domain"; |
| 270 | |
| 271 | $smtpConnection = fsockopen($smtpServerAddress, $smtpPort, $errorNumber, $errorString); |
| 272 | if (!$smtpConnection) { |
| 273 | echo "Error connecting to SMTP Server.<br>"; |
| 274 | echo "$errorNumber : $errorString<br>"; |
| 275 | exit; |
| 276 | } |
| 277 | $tmp = nl2br(htmlspecialchars(fgets($smtpConnection, 1024))); |
| 278 | errorCheck($tmp); |
| 279 | |
| 280 | $to_list = getLineOfAddrs($to); |
| 281 | $cc_list = getLineOfAddrs($cc); |
| 282 | |
| 283 | /** Lets introduce ourselves */ |
| 284 | fputs($smtpConnection, "HELO $domain\r\n"); |
| 285 | $tmp = nl2br(htmlspecialchars(fgets($smtpConnection, 1024))); |
| 286 | errorCheck($tmp); |
| 287 | |
| 288 | /** Ok, who is sending the message? */ |
| 289 | fputs($smtpConnection, "MAIL FROM:<$from_addr>\r\n"); |
| 290 | $tmp = nl2br(htmlspecialchars(fgets($smtpConnection, 1024))); |
| 291 | errorCheck($tmp); |
| 292 | |
| 293 | /** send who the recipients are */ |
| 294 | for ($i = 0; $i < count($to); $i++) { |
| 295 | fputs($smtpConnection, "RCPT TO:<$to[$i]>\r\n"); |
| 296 | $tmp = nl2br(htmlspecialchars(fgets($smtpConnection, 1024))); |
| 297 | errorCheck($tmp); |
| 298 | } |
| 299 | for ($i = 0; $i < count($cc); $i++) { |
| 300 | fputs($smtpConnection, "RCPT TO:<$cc[$i]>\r\n"); |
| 301 | $tmp = nl2br(htmlspecialchars(fgets($smtpConnection, 1024))); |
| 302 | errorCheck($tmp); |
| 303 | } |
| 304 | for ($i = 0; $i < count($bcc); $i++) { |
| 305 | fputs($smtpConnection, "RCPT TO:<$bcc[$i]>\r\n"); |
| 306 | $tmp = nl2br(htmlspecialchars(fgets($smtpConnection, 1024))); |
| 307 | errorCheck($tmp); |
| 308 | } |
| 309 | |
| 310 | /** Lets start sending the actual message */ |
| 311 | fputs($smtpConnection, "DATA\r\n"); |
| 312 | $tmp = nl2br(htmlspecialchars(fgets($smtpConnection, 1024))); |
| 313 | errorCheck($tmp); |
| 314 | |
| 315 | // Send the message |
| 316 | $headerlength = write822Header ($smtpConnection, $t, $c, $b, $subject); |
| 317 | $bodylength = writeBody($smtpConnection, $body); |
| 318 | |
| 319 | fputs($smtpConnection, ".\r\n"); // end the DATA part |
| 320 | $tmp = nl2br(htmlspecialchars(fgets($smtpConnection, 1024))); |
| 321 | $num = errorCheck($tmp); |
| 322 | if ($num != 250) { |
| 323 | echo "ERROR<BR>Message not sent!<BR>Reason given: $tmp<BR></BODY></HTML>"; |
| 324 | } |
| 325 | |
| 326 | fputs($smtpConnection, "QUIT\r\n"); // log off |
| 327 | |
| 328 | fclose($smtpConnection); |
| 329 | |
| 330 | return ($headerlength + $bodylength); |
| 331 | } |
| 332 | |
| 333 | |
| 334 | function errorCheck($line) { |
| 335 | global $color; |
| 336 | // Status: 0 = fatal |
| 337 | // 5 = ok |
| 338 | |
| 339 | $err_num = substr($line, 0, strpos($line, " ")); |
| 340 | switch ($err_num) { |
| 341 | case 500: $message = "Syntax error; command not recognized"; |
| 342 | $status = 0; |
| 343 | break; |
| 344 | case 501: $message = "Syntax error in parameters or arguments"; |
| 345 | $status = 0; |
| 346 | break; |
| 347 | case 502: $message = "Command not implemented"; |
| 348 | $status = 0; |
| 349 | break; |
| 350 | case 503: $message = "Bad sequence of commands"; |
| 351 | $status = 0; |
| 352 | break; |
| 353 | case 504: $message = "Command parameter not implemented"; |
| 354 | $status = 0; |
| 355 | break; |
| 356 | |
| 357 | |
| 358 | case 211: $message = "System status, or system help reply"; |
| 359 | $status = 5; |
| 360 | break; |
| 361 | case 214: $message = "Help message"; |
| 362 | $status = 5; |
| 363 | break; |
| 364 | |
| 365 | |
| 366 | case 220: $message = "Service ready"; |
| 367 | $status = 5; |
| 368 | break; |
| 369 | case 221: $message = "Service closing transmission channel"; |
| 370 | $status = 5; |
| 371 | break; |
| 372 | case 421: $message = "Service not available, closing chanel"; |
| 373 | $status = 0; |
| 374 | break; |
| 375 | |
| 376 | |
| 377 | case 250: $message = "Requested mail action okay, completed"; |
| 378 | $status = 5; |
| 379 | break; |
| 380 | case 251: $message = "User not local; will forward"; |
| 381 | $status = 5; |
| 382 | break; |
| 383 | case 450: $message = "Requested mail action not taken: mailbox unavailable"; |
| 384 | $status = 0; |
| 385 | break; |
| 386 | case 550: $message = "Requested action not taken: mailbox unavailable"; |
| 387 | $status = 0; |
| 388 | break; |
| 389 | case 451: $message = "Requested action aborted: error in processing"; |
| 390 | $status = 0; |
| 391 | break; |
| 392 | case 551: $message = "User not local; please try forwarding"; |
| 393 | $status = 0; |
| 394 | break; |
| 395 | case 452: $message = "Requested action not taken: insufficient system storage"; |
| 396 | $status = 0; |
| 397 | break; |
| 398 | case 552: $message = "Requested mail action aborted: exceeding storage allocation"; |
| 399 | $status = 0; |
| 400 | break; |
| 401 | case 553: $message = "Requested action not taken: mailbox name not allowed"; |
| 402 | $status = 0; |
| 403 | break; |
| 404 | case 354: $message = "Start mail input; end with ."; |
| 405 | $status = 5; |
| 406 | break; |
| 407 | case 554: $message = "Transaction failed"; |
| 408 | $status = 0; |
| 409 | break; |
| 410 | default: $message = "Unknown response: $line"; |
| 411 | $status = 0; |
| 412 | $error_num = "001"; |
| 413 | break; |
| 414 | } |
| 415 | |
| 416 | if ($status == 0) { |
| 417 | echo "<HTML><BODY BGCOLOR=#ffffff>"; |
| 418 | echo "<TT>"; |
| 419 | echo "<BR><B>ERROR</B><BR><BR>"; |
| 420 | echo " <B>Error Number: </B>$err_num<BR>"; |
| 421 | echo " <B>Reason: </B>$message<BR>"; |
| 422 | echo "<B>Server Response: </B>$line<BR>"; |
| 423 | echo "<BR>MAIL NOT SENT"; |
| 424 | echo "</TT></BODY></HTML>"; |
| 425 | exit; |
| 426 | } |
| 427 | return $err_num; |
| 428 | } |
| 429 | |
| 430 | function sendMessage($t, $c, $b, $subject, $body, $reply_id) { |
| 431 | global $useSendmail, $msg_id, $is_reply, $mailbox; |
| 432 | global $data_dir, $username, $domain, $key, $version, $sent_folder, $imapServerAddress, $imapPort; |
| 433 | |
| 434 | $imap_stream = sqimap_login($username, $key, $imapServerAddress, $imapPort, 1); |
| 435 | if ($reply_id) { |
| 436 | sqimap_mailbox_select ($imap_stream, $mailbox); |
| 437 | sqimap_messages_flag ($imap_stream, $reply_id, $reply_id, "Answered"); |
| 438 | } |
| 439 | |
| 440 | if ($useSendmail==true) { |
| 441 | $length = sendSendmail($t, $c, $b, $subject, $body); |
| 442 | } else { |
| 443 | $length = sendSMTP($t, $c, $b, $subject, $body); |
| 444 | } |
| 445 | |
| 446 | if (sqimap_mailbox_exists ($imap_stream, $sent_folder)) { |
| 447 | sqimap_append ($imap_stream, $sent_folder, $length); |
| 448 | write822Header ($imap_stream, $t, $c, $b, $subject); |
| 449 | writeBody ($imap_stream, $body); |
| 450 | sqimap_append_done ($imap_stream); |
| 451 | } |
| 452 | |
| 453 | // Delete the files uploaded for attaching (if any). |
| 454 | deleteAttachments(); |
| 455 | } |
| 456 | ?> |